Condenser.



A. HOUGH.

CONDENSER.

APPLICATION FILED vri. 9. I9I5.

Patented July 18, 1916.

E7 sa 35 35 Arf/wr Haug/7.

ARTHURHOUGH, OF DRAGON, QUEBEC,` lANADA.

CON DENSER.

Specification of LettrsPatent.

Patented July 18, 1916.

Application led February 9, 1915. Serial No. 7,204.

To all whom t may conce/m:

Be it known that I, ARTHUR HoUGH, a resident of Dragon, Province ofQuebec, Dominion of Canada, have invented certain new and usefulImprovements in Condensers; and I do hereby declare that the followingis a full, clear, and exact descr1pt-ion thereof.

My invention relates to condensing appa. ratus and more particularly toapparatus for condensing nitric acid vapor.

In the method to which my invention more particularly relates it isusual to employ apparatus consisting of a plurality of units through aseries of which condensation is not only progressively developed butfull condensation of a portion of the vapor is usually obtained in eachunit.

This invention relates more particularly 'to the units of the apparatus;and it may be said briefly to consist of a unit comprising a section orcontainer of dish form provided with a cover divided into a number 'ofpart-s veach of which carries a plurality of condensing members fed fromand defachably connected to a pair of headers, each connection beingadapted to be opened or closed as conditions require. For fullcomprehension, however, of my invention reference must be had to theaccompanying drawings forminga part of this specification in whichsimilar reference characters indicate the same parts. and wherein:

Figure 1 is a plan view of my improved nitric acid condenser unit; Fig.2 is a longitudinal vertical sectional view thereof taken on irregularline 2 2 of Fig, l; and Fig. 3 is a detail sectional view taken on line3-3 Fig. I; and Fig. 4 is a sectional view of the means effectingcommunication between two units. V

The dish or container of my unit is indicated at 2 and it is cast inacid resisting material, with an acid-vapor intake (4) at one end andcommunicating with the interior at approximately midway the depththereof, and a trapped acid outlet (5) in the bottom at` the oppositeend, such bottom sloping slightly to such trapped outlet; and an outletduct 6 for the uncondensed vapor is located at approximately midway thedepth thereof, and at the end of the contamer opposite to the intake 4,both intake and outlet 4 and 6 being disposed' in the longitudinalvertical plane of the container. The trapped acid outlet, 5,communicates with any sultable acid receiver. The trap, indicated at 25,for the acid outlet duct' 5 is preferably bolted tainer and is providedwith a valve 26, while feet 2 7 liftthe container sufficiently from ltssupport to accommodate the trap and valve; and the sloping interior ofthe bottom 1s provided with a series of ribs 28 long1tud1nally arrangedand increasing progressively in height toward the outlet duct to afforda horizontal support for a perforated false bottom 29 made up of aplural1ty of transverse sections 50. The intake and outlet, 4 and 6respectively, are preferably of relativelyy large capacity and ofhorizontal elliptical form to facilitate the i a boss on the bottom ofthe con` whereby the connection, 30, between the unit and another unitand the series or the still at one pinit or the final discharge at theother side. This connection in each ease is preferably in the form of anelbow, the upper surface of which is provided with a recess, '31, ofgreater diameter than the passage therefor', in order to accommodate theoutlet or inlet duct, indicated at 32, as the case may be, ofv the nextadjoining unit.

In order to seal the joints between the cover parts and between each ofthe latter and the protruding ends of the condenser members, each partof the cover is formed with beveled sides, 35, and each end thereof hasa pair of transverse ribs or flanges, 36, flanking the series of holesthrough which the ends of the condenser members protrude. In completingthese jointsv the recesses formed by each adjoining pair of parts andthe space between the flanges at each end and consequently surroundingthe ends of the condenser sections, are filled with cement. The top orrim of the container is preferably dressed to have a cover fit tightlythereon, such cover being suitably packedv or sealed, and it is dividedinto av number of parts, carrying a plurality of condenser-members.

Each condenser member consists of a preferably six-loop zig-zag coil ofglass tubing the loops being substantially equal in height to theinterior of the container and resting upon the false bottom, theopposite ends of each coil protruding upwardly through holes in thecover, each part, 7, of which carries three such coils in staggeredrelation, thus next unit of the s1de and another densing fluid passesmaking twenty-four coils carried by the eight cover pieces, although theparticular number of coils may be varied to suit different conditions,but I prefer to use the 4number stated. These coils are connected toinlet and outlet headers or manifolds S) and 10,

respectively, each equal in sectional area to the sum of' the sectionalarea of' the coils, the connection between the ends of the coils andheaders or manifolds being eflected by a series of nipples, 12, carriedrigidly by the latter. These nipples may be provided with taps (13).Pieces of' rubber piping (14) connect the ends of the nipples to the topof the coils. The taps (13) permit-the condensing action to be regulatedand at the same time permit a coil to be removed when dalnaged and a newstopping the operation of the apparatus. The advantage of the zigzagnature of the coils is that it imparts flexibility to them therebyreducing danger of breakage from expansion and contractionto a minimum;while the fact that the coils are in staggered relation breaks anydirect flow of the vapor from intake to Outlet.

lVhen in operation water flow from inlet header 9 through the coils tooutlet header 10 and the nitric acid vapor flows from the intake lthrough the con tainer, between the loops of the condensermembers, tothe outlet 6, the portion of the vapor 4Which is condensed dropping tothe bottom and flowing out through trapped Outlet 5.

What I claim is as follows:

1. A condenser unit for nitric acid vapo-r, comprising a container ofdish form, consisting of acid resisting material having an intake and anoutlet for the vapor to be condensed and a trapped outlet in the bottomthereof for the liquid acid; a cover divided into a plurality of parts;a series of condenser-members carried by the cover parts and havingtheir ends lprotruding therethrough; a pair of inlet and Outlet headersconnecting with the opposite ends of the condenser members and fromwhich a'conthrough said members.

2. A condenser unit for nitric acid vapor, comprising a container ofdish form consisting of acid resisting material, having an intake and anoutlet for the vapor to be condensed and a trapped outlet in the bottomthereof for the liquid acid; a cover divided into a plurality of parts;a series of condenser-members carriedby the cover-parts consisting ofcoils substantially equal in height to and resting upon the bottom ofthe container, and having their ends protruding through the cover; inletand Outlet one substituted without is caused to headers connecting withthe Opposite ends ot the condenser-membersl and from which a condensingfluid passes through said members.

3. A condenser unit for nitric acid vapor, comprising a container ofdish form consisting of' acid resisting material, having an intake andan outlet f'or the vapor to be condensed anda trapped outlet in thebottom thereof' f'or the liquid acid; a cover divided into a pluralityof parts; a series of condenser-members carried by the cover-partsconsisting of coils substantially equal in height to and resting uponthe bottom of the container, and having their ends protruding throughthe cover; inlet and, outlet headers connecting with the opposite endsof the condenser-members and from which a condensing fluid passesthrough said members; the connection between the headers and coilsconsisting of nipples carried rigidly by the headers and flexible tubinguniting the nipples to the ends of the coils.

4. A condenser-unit for nitric acid vapor,

comprising a container of dish form consisting ofI acid resistingmaterial having an intake and an outlet for the vapor to be condensedand a trapped outlet in the bottom thereof for the liquid acid; a coverdivided into a plurality of' parts, a series of condenser-memberscarried by the cover parts consisting of coils substantially equal inheight to. and resting upon the bottom of the container, and havingtheir ends protruding through the cover, inlet and outlet headersconnecting with the opposite ends of the condenser-members and theconnection between thc headers and coils consisting of nipples carriedrigidly by the headers and flexible tubing uniting the nipples to theends of the coils, each ot the said nipples having a tap. 5. A condenserunit of the type described having a cover divided into independentlyremovable parts, each part having its side edges beveled and theportions near each end formed with holes and having a pair of transverseflanges flanking the holes; aseries of condenser-members having theirends protruding through the holes in the cover parts; and cement betweenthe' flanges and within the recesses formed bythe contiguous bevelededges of the said cover parts.

In testimony whereof I have signed my name to this specification in thepresence of two witnesses.

ARTHUR HOUGH.

Witnesses:

WILLIAM HEWETSON, GORDON Gr. COOKE.

